Parasite Protozoa: The Amebas

Question 1

Phylum Retortamonada Charateristics

Answer 1

1. Mitochondria and dictyosomes absent
2. Trophozoite and cyst forms exact
3. Intestinal parasites and commensals

Question 2

Phylum Retortamonada
1. Family Retortamonadidae
2. Family Hexamitidae

Answer 2

A. Chilomastix mesnili
B. Giardia lamblia (duodenalis)

Question 3

Chilomastix mesnili

Answer 3

1. Live in cecum an colon of several hominoids (include humans) an pigs
2. Infects 3.5% of population in the US (commensal)

Question 4

Giardia lamblia (duodenalis)

Answer 4

1. Most common flagellate in human digestive tract & lives in pts of small intestine
2. Forms cysts in lg intestine
3. Feeds on mucus secretions
4. Adhesive disc to attach to epithelial cells

Question 5

Phylum Parabasalia Characterisics

Answer 5

1. Parabasal body “golgi” present
2. Non-motile axostyle ( median rod)
3. Up to 1000s flagella

Question 6

Phylum Parabasalia
1. Family trichomonadidae

Answer 6

Trichomonas Vaginalis

Question 7

1. Trichomonas Vaginalis
2. Trichomonas Hominis

Answer 7

1. -Found in males/female reproductive tracts
   -row of hydrogenosomes “mitochondria”
2. -Commensal of digestive tract
   -5 anterior flagella

Question 8

Phylum Chromista characteristics

Answer 8

1. Rows of flagella over the surface
2. Plastids enveloped in endoplasmic membranes

Question 9

Phylum Chromista
1. Family Opalinidae

Answer 9

Opaline

Question 10

Amoebas characterisics

Answer 10

Divided into those infecting the mouth and intestine and those infecting the Brains and eyes

1. Movement is by pseudopodia
2. Flagella in some stages
3. Typically uninucleate unless encysted
4. Asexual

Question 11

Amoeba
1. Family entamoebida
2. Family vahlkampfiidae
3. Family Acanthamoebidae

Answer 11

-entamoeba histolytica
-naegleria Fowleri
-Acanthamoeba

Question 12

Amoeba infecting mouth and an intestine

Answer 12

1. Family entamoebidae
2. Endolimax nana
3. Iodamoeba Buetschlii

Question 13

Entamoeba histolytica lifecycle

Answer 13

a. Trophoziote
B. Precyst
C. Cyst
D. Metalyst
E. Trophozoite

Question 14

Amoebas infecting Brain and eyes
Family vahlkampfildae
Naegleria Fowleri

Answer 14

Family
1. Flagellate, Amoeboid, as cyst stages
2. Free-living in warm water
3. Some can become facultative parasites in vertebrates

Nae
Major cause of PAM

Question 15

Amoebas infecting brain an eyes
Family Acanthamoebidae

Acanthamoeba

Answer 15

Family
1. Amoeboid and possible cyst stage
2. Free living in water
3. Some can become facultative

Acanthamoeba
Cause keratitis and other infections